Gewiss GW14763 thermostat Technical Guide

Gewiss GW14763 thermostat

Introduction

This manual describes the functions of the devices named GW1x763 “Easy thermostat” and how to use the ETS configuration software to change the settings and configurations.

Application

The Easy thermostat allows you to manage the temperature in the area it is installed in. The temperature is regulated by the KNX/EIB actuators which are managed by the Home Automation KNX/EIB bus and control the heating or air conditioning elements, including the fan coils. When combined with the wall Easy Timer Thermostat (GW 10 761 – GW 14 761), from which it receives the operation type and mode via the bus, it is possible to create multi-zone thermal regulation systems. The set-point values used by the thermostat are set locally. The device manages two operating modes, HEATING and AIR CONDITIONING, and controls both systems whilst providing 4 different operating modes for each operating mode (ECONOMY/PRECOMFORT/COMFORT/OFF), each with its own customisable setpoint. The device is always able to autonomously manage the temperature in the environment it is installed in, using control algorithms (two points or PI) or the use of fan coils, depending on the type of system built. The thermostat is only able to manage the heating and air conditioning system if it is a 4-pipe configuration as it is designed to manage one actuator for the heating system and another for the air-conditioning system; This manual refers solely to the configuration using the ETS software. Please refer to the INSTALLATION AND USER MANUAL supplied with the product for instructions on how to use the internal menu and the various local key functions.

Limits to the associations

• Maximum number of group addresses: 110
• Maximum number of logical associations: 110

“Settings” menu
Here it is possible to configure the programming mode between ETS mode (S-Mode) and Easy mode by the Easy controller software (Kit GW90837, Kit GW90838, GW90840) see Diag 3.1.

Parameters

Programming mode

This parameter determines the programming mode of the device:

• ETS mode

Select this value if you want to configure the device with ETS (S-Mode); all the configuration parameters are now visible.

• Easy mode

Select this value if you want to configure the device with the Easy controller software. Remember to download the application program with this value selected before using the device by the Easy controller software if you have already used the device in an ETS project.

Communication objects
There are no communication objects enabled by the Settings menu.

Main” menu
The Main menu lists all the parameters needed to configure the behaviour of the device in HVAC system (see Diag. 4.1); the structure and the options displayed in the Main menu change according to the settings for the various options.

Parameters

Operating mode
This allows you to configure how the device is used; the settings are:

• Slave
  The device is configured to manage the HVAC system using the master device as a timer-thermostat. With this configuration the device does not control the entire system, but only a part of it, called a zone, whilst a master device is installed which controls the operating types and HVAC modes; in this case the thermostat controls the ambient temperature where it is installed, whilst the master device manages the operating functions according to the settings configured by the operator. In this function mode the thermostat uses the set-point values that are set locally. It is possible to change the set temperature set-point (max variation ± 3 °C), whilst it is not possible to change the operation mode. The modified set-point will remain valid until the Master device sends a new operation mode. With this setting, the HVAC mode input and Operating type input communication objects are now visible.
• stand alone
  The device is configured to autonomously manage the HVAC system, without the use of timer-thermostats that control the device functions; with this configuration you create a single ambient temperature control centre. The thermostat operation type and mode are set locally. The operation status does not depend on any other device. In Stand-alone mode it is possible to vary the set-point at will and enable the thermostat to receive remote commands from other devices, such as for instance a button or the EIB Easy GSM remote control module GW 90 861.With this setting, the Operating type and mode command execution parameter appears, which will be analysed in paragraph 4.1.2.

Operating type and mode command execution:
This enables the device to receive the HVAC mode and operating type setting commands from the bus; the settings are:

• deactivated
  It is not possible to modify the HVAC mode or operating type on the device by bus command; both parameters can only be set using the local keyboard.
• active
  It is also possible to modify the HVAC mode or operating type on the device by bus command; both parameters can however be set using the local keyboard. With this setting, the HVAC mode input and Operating type input communication objects are now visible.

Scenes function
This is to enable the scene function and make the relative Scene communication object visible. The scene function sends two possible commands to the device:

• execute scene, that is a command to create a specific condition
• store scene, that is a command to memorise the current status (at the moment the command is received) of the HVAC mode, operating type and any indicated setpoint temporary forced positioning.

This function foresees 8 different scenes, so the device can memorise /reproduce 8 different operating modes and types. The settings are:

• deactivated

The scene function is not enabled and consequently the communication object is not visible.

• active

The scene function is enabled and is managed by the Scene communication object.

Communication objects

The Main menu makes the following communication objects visible (see Diag. 4.2.):

HVAC mode input
Here you can configure the remote control of the device operating mode (HVAC mode) by bus command. When this communication object receives a telegram with the operating mode information that is to be set, the device sets the operating mode according to the command received, indicated by a pilot light on the display. If the device has been configured in stand alone mode, it is still possible to modify the operating mode using the local navigation menu on the device, which does nothing more than replicate the command reception event on the communication object in question to modify, with each pressing, the operating mode. The enabled flags are C (communication), W (written by bus), R (read by bus), T (transmission) and U (actualize the value). The standard format of the object is 20.102 DPT_HVACMode, the size of the object is 1 byte and the commands it receives are operating mode commands: Economy/Precomfort/Comfort/Off.

Window status
Here you can enable the remote control of the device OFF operating mode (or HVAC mode) by bus command, when a windows is open. When this object receives a telegram with a “1” logic value (window open), the device instantly switches to OFF mode, indicated by a pilot light on the display, given the enabling of this object has a higher priority than any other HVAC setting; vice versa, when this object receives a “0” logic value (windows closed), the device instantly disables the OFF operating mode and the new operating mode is enabled automatically by the device according to the last command received (HVAC mode or scene) or the HVAC mode installed before windows status activation. The enabled flags are C (communication), W (written by bus). The standard format of the object is 1.019 DPT_Window_Door, the size of the object is 1 bit and the commands it receives are windows status open/close.

Scene
Using this communication object, the device is able to receive the execute and store scene commands from the bus. On receiving a store scene command, through a bus telegram to the communication object in question, please remember that the device memorises the HVAC mode, operating type and any temporary forced setpoint. The enabled flags are C (communication), W (written by bus). The standard format of the object is 18.001 DPT_SceneControl, the size of the object is 1 byte and the commands it receives are execute/store scene.

Operating type input
Here you can configure the remote control of the device function type by bus command. When this object receives a telegram with a “1” logic value, the device sets the operating type to HEATING, indicated by a pilot light on the display, maintaining the same operating mode as before; vice versa, when this object receives a telegram with a “0” logic value, the device sets the operating type to AIR CONDITIONING, indicated by a pilot light on the display, maintaining the same operating mode as before. In any case, it is however possible to modify the operating type using the local navigation menu on the device. The enabled flags are C (communication), W (written by bus). The standard format of the object is 1.100 DPT_Heat/Cool, the size of the object is 1 bit and the commands it receives are operating type commands: Heating/Air conditioning.

“Temperature setpoint” menu
The Temperature setpoint menu lists all the parameters needed to configure the setpoint values for the various HVAC modes and the two different operating types (see diag. 5.1). Please remember that among the various setpoints belonging to the same function type, there is a setting value threshold determined from what seen below:

• Tantifreeze ≤ Teconomy ≤ Tprecomfort ≤ Tcomfort in heating (“T” indicates the standard mode setpoint value)
• omfort ≤ Tprecomfort ≤ Teconomy ≤ Thigh temp. protect. in air conditioning (“T” indicates the standard mode setpoint value)

Whilst a control is made over the modifications to setpoints from the local menu to make sure the threshold is not exceeded, the operator is requested to avoid setting setpoints for ETS parameters that do not comply with the above threshold as this could cause the device to malfunction.

Setpoint modification via keyboard

This allows you to enable the viewing of the device operating setpoints in the local navigation menu; the settings are:

• deactivated

When you access the local navigation menu the parameters that allow you to modify the operating setpoints on the device are not visible (for further information on these parameters, please consult the  INSTALLATION AND USER MANUAL).

• active

When you access the local navigation menu the parameters that allow you to modify the operating setpoints on the device are visible (for further information on these parameters, please consult the  INSTALLATION AND USER MANUAL).

Heating antifreeze setpoint: (tenth of °C)
Here you can set the setpoint value for the OFF mode when it is HEATING operating mode; the values range from 20 (2 degrees centigrade) to 70 (7 degrees centigrade). The restrictions listed before must be complied with when setting this value. This value can in any case be modified by the operator using the setting in the local navigation menu on the device (if setpoint modification via keyboard is enabled).

Heating economy setpoint: (tenth of °C)
Here you can set the setpoint value for the ECONOMY mode when it is HEATING operating mode; the values range from 50 (5 degrees centigrade) to 400 (40 degrees centigrade). The restrictions listed before must be complied with when setting this value. This value can in any case be modified by the operator using the setting in the local navigation menu on the device (if setpoint modification via keyboard is enabled). The features, functions and restrictions listed above also apply to the Heating precomfort setpoint:(tenth of °C), Heating comfort setpoint: (tenth of °C) parameters for the HEATING operating type.

Air cooling high-temperature protection setpoint: (tenth of °C)
Here you can set the setpoint value for the OFF mode when it is AIR CONDITIONING operating mode; the values range from 300 (30 degrees centigrade) to 400 (40 degrees centigrade). The restrictions listed before must be complied with when setting this value. This value can in any case be modified by the operator using the setting in the local navigation menu on the device (if setpoint modification via keyboard is enabled).

Air cooling economy setpoint: (tenth of °C)
Here you can set the setpoint value for the ECONOMY mode when it is AIR CONDITIONING operating mode; the values range from 50 (5 degrees centigrade) to 400 (40 degrees centigrade). The restrictions listed before must be complied with when setting this value. This value can in any case be modified by the operator using the setting in the local navigation menu on the device (if setpoint modification via keyboard is enabled). The features, functions and restrictions listed above also apply to the Air cooling comfort setpoint:(tenth of °C), Air cooling comfort setpoint: (tenth of °C) parameters for the AIR CONDITIONING operating type.

Communication objects

There are no communication objects enabled by the Temperature setpoint menu.

“Control algorithm” menu
The Control algorithm menu lists all the parameters used to set the control algorithms for the heating and air conditioning system; the structure and the options displayed in the Control algorithm menu change according to the settings for the Control type parameter.

Parameters
If the control type selected is two points control (On/Off), the menu is shown in diag. 6.1.

Control type: two points control (On/Off)

The algorithm used to control the heating system is the classic algorithm defined as a two points control. This control type turns the heating system ON and OFF according to a hysteresis cycle, that is there is no single threshold that discriminates the ON and OFF commands but two are identified 

You can see in this diagram that there are two thresholds which control the ON and OFF commands for the heating system and two for air conditioning system; for heating system, the first threshold consists in the “setpoint-∆TH“ (where ∆TH identifies the heating regulation differential value) value, below which the device switches the system ON, the second consists in the indicated setpoint value, over which the device switches the system OFF. For air conditioning system, the first threshold consists in the “setpoint+∆TAC“ (where ∆TAC identifies the air conditioning regulation differential value) value, over which the device switches the system ON, the second consists in the indicated setpoint value, below which the device switches the system OFF. With this setting, the Heating regulation differential (tenth of °C) and Air conditioning regulation differential (a tenth of °C) parameters are visible. In order to avoid continuous switchings that can damage the valves, the thermostat will wait for up to 2 minutes before sending the activation command to the actuator that controls the thermal regulation system.

Heating regulation differential (tenth of °C)
Here you can set the heating regulation differential value which, subtracted from the indicated setpoint value, determines the threshold value below which the heating system is switched ON upon two points control. The settings range from 2 (tenths of degrees centigrade) to 20 (tenths of degrees centigrade).

Air conditioning regulation differential (tenth of °C)
Here you can set the air conditioning regulation differential value which, added from the indicated setpoint value, determines the threshold value over which the air conditioning system is switched ON upon two points control. The settings range from 2 (tenths of degrees centigrade) to 20 (tenths of degrees centigrade).

Controlled actuator’s feedback:
This allows you to enable the device so it can receive feedbacks from the actuators (loads) it controls; the settings are:

• deactivated

The device is not able to receive feedback from the actuators (loads) that the command sent has actually been performed.

• active

The device is able to receive feedback from the actuators (loads) that the command sent has actually been performed; if within one minute from sending a command to a load, the latter does not send confirmation of execution of the command to the thermostat, it will send the command again every minute until it receives due confirmation from the load; the heating/air conditioning system pilot light will blink to signal this anomaly. The Heating status feedback and the Air cooling status feedback communication objects are visible.

Control type: PI control (PWM)

PI control (PWM)
The algorithm used to control the heating system is the algorithm that allows you to reduce heat inertia times caused by a two points control, called a PMW control. This control type foresees the modulation of the pulse duty cycle, represented by the heating (or air conditioning) system activation time, according to the difference between the indicated setpoint and the detected temperature (see Diag. 6.4 and Diag. 6.5).
The device keeps the heating (or air cooling) system ON for a percentage of time that depends on the difference between the measured temperature and the indicated setpoint; the setpoint and “setpoint-∆TH“ values (for the heating system) and “setpoint+∆TAC“ and setpoint values (for air conditioning system) are indicated on the ordinate axis, that determines the proportional band limits within which the device constantly regulates the heating (or air conditioning) system, modulating the system’s ON and OFF times. With this type of algorithm, there is no hysteresis cycle on the heating element and therefore the inertia time (system heating and cooling time) introduced by the two points control is eliminated. This also leads to energy savings as the system does not stay ON for no reason and, once the desired temperature has been reached, it continues to supply amounts of heat just to compensate any dispersion of heat in the environment.

HEATING

AIR CONDITIONING 

Cycle time for heating control
Here it is possible to set the time within which the device must perform PWM modulation. The settings are provided in the drop-down menu (an interval of from 5 to 60 minutes).
The settings are all multiples of 5 because, as you can see in Diag. 6.4, the duration of the heating system activation time is expressed as a percentage compared to the cycle time with a step of 20%. This means that, should the result of the control algorithm lead to a system activation time equal to 40% of the cycle time, if the value of the latter is 20 minutes, the device will activate the system for 8 minutes and then deactivate it until the end of the cycle time; at this point the PMW control algorithm is applied again and the activation time will be duly modified.

Cycle time for air conditioning control
As the air conditioning parameter has the same characteristics and functions, with the only difference being that it refers to the AIR CONDITIONING operating mode, please refer to the paragraph 6.1.6 for further information.

Heating regulation proportional differential (tenth of °C)
Here you can set the heating PMW regulation differential value which, subtracted from the indicated setpoint value, determines the lowest limit of the proportional band limits used to modulate the time when the heating system is switched ON upon PWM proportional control. The settings are provided in the drop-down menu (an interval of from 0.4°C to 3.2°C).
The settings are all multiples of 0.4 because, as you can see in Diag. 6.4, the proportional band is divided into four zones and the minimum resolution for the device is 0.1 °C. This value set for this option, divided by 4, determines the width of the proportional sub-band within which the device determines the system ON and OFF times.

Air conditioning regulation proportional differential (tenth of °C)
As the air conditioning parameter has the same characteristics and functions, with the only difference being that it refers to the AIR CONDITIONING operating mode, please refer to paragraph 6.1.8 for further information.

Controlled actuators feedback
See chapter
If the control type selected is fan coil, the menu is

Control type: fan coil

fan coil
The control type applied if the fan coil control is enabled is similar to the two points control analyzed in the previous chapters; that is it activates/deactivates the fan coil speeds according to the difference in the configured setpoint and the measured temperature. The actual difference between the 2 points algorithm is that, in this case, there is not one stage when the hysteresis cycle is performed to set the ON and OFF speed thresholds, but there are three; this means that each stage corresponds to a speed and when the difference between the measured temperature and the configured setpoint determines the activation of a specific speed, the other two must be deactivated before the new speed can be activated. There are two diagrams below that illustrate how the speeds to be activated are determined, according to the measured temperature for both the heating (Diag. 6.7), and air conditioning systems 

The diagram refers to the speed control of the fan coil with three function stages for the heating system. Looking at the graph, you can see that there is a hysteresis cycle for each stage, and two thresholds are associated to each speed that determines activation and deactivation. The thresholds are calculated by the values set for the heating regulation differential, and can be summarised as follows:

• Speed V1 (stage 1): the speed is activated when the value of the temperature is less than the “setpoint-∆TH” value and deactivated when the temperature reaches the configured setpoint value (remember that speed 1 is deactivated also when a higher speed is activated)
• Speed V2 (stage 2): the speed is activated when the value of the temperature is less than the “setpoint-2∆TH” value and deactivated when the temperature reaches the “setpoint-∆TH” value (remember that speed 2 is deactivated also when a speed V3 is activated)
• Speed V3 (stage 3): the speed is activated when the value of the temperature is less than the “setpoint-3∆TH” value and deactivated when the temperature reaches the “setpoint-2∆TH“ value

You can see that, once the measured temperature is lower than the “setpoint-∆TH”, value, further to activate the fan coil speed according to the algorithm analysed before, the thermostat also sends an open command to the solenoid value that controls the heating system; the solenoid valve is however closed when the measured temperature reaches the configured setpoint value. The diagram concerning the air conditioning system can be seen  

The diagram refers to the speed control of the fan coil with three function stages for the air conditioning system. Looking at the graph, you can see that there is a hysteresis cycle for each stage, and two thresholds are associated to each speed that determines activation and deactivation. The thresholds are calculated by the value set for the air conditioning regulation differential, and can be summarised as follows: – Speed V1 (stage 1): the speed is activated when the value of the temperature is greater than the “setpoint+∆TAC” value and deactivated when the temperature reaches the configured setpoint value (remember that speed 1 is deactivated also when a higher speed is activated)

• Speed V2 (stage 2): the speed is activated when the value of the temperature is greater than the “setpoint+2∆TAC” value and deactivated when the temperature reaches the “setpoint+∆TAC” value (remember that speed 2 is deactivated also when a speed V3 is activated)
• Speed V3 (stage 3): the speed is activated when the value of the temperature is greater than the “setpoint+3∆TAC” value and deactivated when the temperature reaches the “setpoint+2∆TAC” value

You can see that, once the measured temperature is higher than the “setpoint+∆TAC” value, further to activate the fan coil speed according to the algorithm analysed before, the thermostat also sends an open command to the solenoid valve that controls the air conditioning system; the solenoid valve is however closed when the measured temperature reaches the configured setpoint value.
The functions described are applied when the fan coil operating mode is set to AUTO, whilst if it is in MANUAL mode and the operator sets a specific speed, the speed activation command is set when the measured temperature is lower than the “setpoint-∆TH” value in heating mode, and lower that the “setpoint+∆TAC” value in air conditioning mode.In order to avoid continuous switchings that can damage the valves, the thermostat will wait for up to 2 minutes before sending the activation command to the actuator that controls the thermal regulation system.

Heating regulation differential (a tenth of °C):
Here you can set the heating fan coil speed regulation differential (∆TH), used to calculate the correct speed of the fan coil. The settings range from 2 (tenths of degrees centigrade) to 20 (tenths of degrees centigrade).

Air conditioning regulation differential (a tenth of °C):
Here you can set the air conditioning fan coil speed regulation differential (∆TAC), used to calculate the correct speed of the fan coil. The settings range from 2 (tenths of degrees centigrade) to 20 (tenths of degrees centigrade).

Controlled actuators feedback
See chapter 6.1.4. In this case, the communication objects visible are V1 fan status feedback, V2 fan status feedback, V3 fan status feedback, Heating status feedback and Air cooling status feedback It is recommended to use the actuator’s feedback. The device software has a logic interlock function that allows you to activate a different fan coil speed from that currently activated only if the correct feedback has been received by the latter that the speed has been deactivated; until the thermostat receives feedback that the enabled speed has been deactivated, it will not send activation commands for the new speed, to prevent a series of fan coil windings being powered at the same time which would break the fan coil.

Communication objects

Heating status feedback
This allows the device to be informed on the status of the actuator that manages the heating system controlled by the thermostat; once the command has been sent to this actuator, if the device does not receive confirmation within one minute that the load has executed the command by bus telegram to the communication object in question, it will instantly send the command again every minute until it receives due confirmation from the load. The heating/air conditioning system pilot light will blink to signal this anomaly (according to which is displayed on the screen). If feedback is received by the actuator that does not copy the command sent, the device will instantly send another command and trigger the above-described control.
The enabled flags are C (communication), W (written by bus) . The standard format of the object is 1.001 DPT_Switch, the size of the object is 1 bit and the commands it receives are the heating system actuator status On/Off.

Air cooling status feedback
The same applies as indicated in the previous paragraph but in relation to the air conditioning system actuator (please refer to 6.2.1 for further details).

Heating switching
This allows the device to send ON/OFF commands to the actuator that manages the heating system controlled by the thermostat; according to the control algorithm set, the device calculates when it has to intervene on the heating system to regulate the ambient temperature and therefore sends a telegram with a “1” logic value to activate the system, and “0” logic value to deactivate the same system.
The enabled flags are C (communication), R (read by bus) and T (transmission) . The standard format of the object is 1.001 DPT_Switch, the size of the object is 1 bit and the commands it sends are heating system On/Off.

Cooling switching
The same applies as indicated in the previous paragraph, but in relation to the air conditioning system actuator (please refer to 6.2.3 for further details).

Fan V1 switch
This allows the device to send ON/OFF commands to the actuator that manages speed one on the fan coil. The device calculates the speed to activate on the fan coil to regulate the ambient temperature and sends a telegram with a “1” logic value to activate speed one and a “0” logic value to deactivate the same speed. The enabled flags are C (communication), R (read by bus) and T (transmission) . The standard format of the object is 1.001 DPT_Switch, the size of the object is 1 bit and the commands it sends are fan coil speed one ON/OFF.

V1 fan status feedback
This allows the device to be informed on the status of the actuator that manages the speed 1 on the fan coil; once the command has been sent to this actuator, if the device does not receive confirmation within one minute that the speed has been activated by bus telegram to the communication object in question, it will instantly send the command again every minute until it receives due confirmation. The fan coil control pilot light will blink to signal this anomaly. If a feedback is received by the actuator that does not copy the command sent, the device will instantly send another command and trigger the above described control.
The enabled flags are C (communication), W (written by bus) . The standard format of the object is 1.001 DPT_Switch, the size of the object is 1 bit and the commands it receives are fan coil speed 1 status: On/Off.

Fan V2 switch
The same applies as indicated in the previous paragraph, but in relation to fan coil speed two. For further details see 6.2.5.

V2 fan status feedback
The same characteristics and function apply as indicated in the previous paragraph, the different being that it refers to the actuator that controls speed 2 on the fan coil

Fan V3 switch
The same applies as indicated in the previous paragraph, but in relation to fan coil speed three. For further details

V3 fan status feedback
The same characteristics and function apply as indicated in the previous paragraph, the different being that it refers to the actuator that controls speed 3 on the fan coil

“Reports” menu

The Reports menu lists all the parameters needed to configure the send feedback settings that the device sends by bus telegram 

Parameters

Measured temperature object
This allows you to set the conditions for sending the measured temperature value through the Measured temperature output communication object; the settings are:

• sending on demand only
  The temperature value is not sent spontaneously by the device, but only upon receiving a status read request, when the device sends a response telegram to the applicant with the relative measured temperature value, which is displayed on the screen. The Periodical messages sending time option is not visible.
• sending on variation only (1/2 °C)
  The temperature value is sent spontaneously by the device, but only if the variation in temperature compared to the last sent value is equal to at least 0.5 degrees centigrade. The Periodical massages sending time option is not visible.
• periodic sending
  The temperature value is sent periodically by the device, according to set intervals. The Periodical massages sending time option is also visible and is used to set the interval at which the measured temperature value should be sent (see Chapter 7.1.2).

Periodical messages sending time
Here you can set the interval at which the measured temperature telegrams are sent; the settings are provided in the drop-down menu and range from “Every minute” to “Every 255 minutes”.

Operating type report object
Here you can configure the send conditions for the operating type feedbacks (heating or air conditioning) through the Operating type feedback communication object. The settings are:

• sending on demand only
  The feedback of the operating type enabled on the device is not sent spontaneously by the device through the Operating type feedback communication object, but only upon receiving a status read request, when the device sends a response telegram to the applicant with the relative information on the operating type set for the device.
• sending on variation only
  The feedback for the operating type enabled on the device are sent spontaneously by the device through the Operating type feedback communication object every time there is a variation in operating mode.

Thermoregulation mode report object
Here you can configure the send conditions for the operating mode feedback through the Thermoregulation mode feedback communication object. The settings are:

• sending on demand only
  The feedback of the operating mode are not sent spontaneously by the device with a telegram through the HVAC mode feedback communication object, but only upon receiving a status read request, when the device sends a response telegram to the applicant with the relative information on the operating mode set for the device.
• sending on variation only
  The operating mode feedback are sent spontaneously by the device through the HVAC mode feedback communication object every time there is a variation in operating mode status.

The Reports menu makes the following communication objects visible (see Diag. 7.2)

HVAC mode feedback

• This allows the device to notify the operating mode set by bus telegram.
• The sending of such feedback depends on the settings entered for the Thermoregulation mode report object option.
• The enabled flags are C (communication), R (read by bus) and T (transmission) .
• The standard format of the object is 20.102 DPT_HVACMode, the size of the object is 1 byte and the commands it sends are HVAC mode: Economy/Precomfort/Comfort/Off.

Operating type feedback

• This allows the device to notify the operating type set by bus command.
• The sending of such feedback depends on the settings entered for the Operating type report object option.
• The enabled flags are C (communication), R (read by bus) and T (transmission) .
• The standard format of the object is 1.100 DPT_Heat/Cool, the size of the object is 1 bit and the commands it sends are operating type: Heating/Air conditioning.

Measured temperature output

• The device uses this communication object to notify the measured temperature value, that is the one displayed on the screen measured by the internal sensor.
• The sending of such feedback depends on the settings entered for the Measured temperature object option.
• The enabled flags are C (communication), R (read by bus), and T (transmission).
• The standard format of the object is 9.001 DPT_Value_Temp, the size of the object is 2 bytes and the commands it sends are measured temperature values expressed in degrees centigrade (rounded off to a tenth of a degree).

References

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Gewiss GW14763 thermostat Technical Guide

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Gewiss GW14763 Thermostat Instruction Guide

Gewiss GW14763 thermostat Technical Guide